"After investigation, a charge sheet has been filed in the competent court in Lucknow against Sengar and Shashi Singh under sections 120 B, 363, 367, 376(1), 506 of the IPC (Indian Penal Code) and sections 3 and 4 of Pocso (Protection of Children from Sexual Offences) Act," CBI spokesperson Abhishek Dayal said in New Delhi.

A CBI official also said that the victim was first raped by the Bharatiya Janata Party MLA on June 4, 2017 evening, while she was gangraped by another set of accused between June 11 to 20.

Sengar, who represents the Bangermau assembly constituency, is in jail for allegedly raping the teenager at his home when she had gone to meet him for a job. Shashi Singh is his close aide who allegedly lured the girl to the MLA.

In April, the victim tried to commit suicide outside Uttar Pradesh Chief Minister Yogi Adityanath's house, alleging that police did not act though she had approached them several months earlier.